STP321
STP322
Programmable Thermostat
WARNING
Ensure that the electrical power circuit and control output circuit is suitably
protected and fused for your application.
Ensure all electrical connections are secure and checked before any power to the
device is turned on. Failure to connect correctly may cause damage to your
controller or system, electrical shock or fire.
Use this instrument only within the scope of its specification otherwise it may
cause damage to your controller or system, electrical shock or fire.
Do not use this instrument in environments subject to flammable or explosive gas.
Do not touch high voltage terminals, such as power supply terminals. Always
isolate the power supply before attempting any adjustments to the wiring terminals.
Never disassemble, repair or modify this instrument. This will invalidate any
warranty and could lead to damage to your controller or system, electrical shock or
fire.
Technical Data
Dimensions: 75mm x 33mm x 70mm
Sampling time: 2 times/sec.
Mounting: panel-mounted.
Panel cutout: 71mm x 29mm
Multi input: K/J/Pt100/4~20mA
Output: STP321, one main output (Relay or SSR drive – 12Vdc)
STP322, one main output and one alarm output (3A/250V)
Control method: ON/OFF control
Accuracy: O.5% F.S.
Display: 3 digits 7 segments LED display
Power consumption: 3VA max. (Mod. 230V)
Power supply: 21-30VDC or 110-240VAC (Selected when ordering)
Working environment: 0-50°C
Operating & Storage humidity: less than 80%RH (non-condensing)
Order Code
Please check whether the delivered product is as specified by referring to the
following model code list. Please specify the model code when you place the order.
STP32
Wire Connection
Front Panel
SET - LED will be “ON” when the user is changing the set point.
OUT - LED will be “ON” when the Output Relay / SSR drive is active.
ALM - LED will be “ON” when the alarm relay is active.
H/C - LED will be lit RED when the control action is Heating and
GREEN when the control action is Cooling.
Exit key
Press this key to exit from parameter setting mode.
"UP" and "DOWN" Keys - Press the keys to choose the parameters
and set the values. Press the "UP" key to show the software version.
Function key
Press this key 3 seconds to enter set point setting mode.
Press this key 6 seconds to enter parameters setting mode.
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